/Engine/Source/Runtime/ApplicationCore/Public/GenericPlatform/Accessibility/GenericAccessibleInterfaces.h
Callers should also useGetAccessibleUserRegistry()to register and interact with accessible users. Accessible users must be registered with the set accessible user registry for the rest of the application to be able to retrieve and interact with the accessible users.
class FGenericAccessibleMessageHandler
bool
bApplicationIsAccessible
Subclasses should override this to indicate that they support accessibility.